Steel Stack Design | MecaStack Software | Meca Enterprises Inc

MecaStack is a 3D stack design software that is used to design steel stacks, steel chimneys, flares, exhaust stacks, etc. of a variety of dimensions and attachments. In addition, the software also performs a bending analysis of the stack to aid with the stack lifting design.  MecaStack can be used to analyze self supported stacks (free standing) and guyed stacks (guy wire supported).  Similarly, it can be used for design of steel chimneys or stacks that are braced on a building or other structures by lateral bracing.  Above all, the software is very easy to use and extremely versatile at handling a wide range of problems and designs.

Some of the components that MecaStack incorporates are:

  • Ladders and Platforms
  • Stiffening Rings
  • Structural Flanges
  • Damping devices (Software does not design the Damper)
  • Flare Tips
  • Insulation/Refractory/Jacket
  • Breeches/Nozzles (Stack Openings)
  • Piping

To determine which MecaStack version and license best suits your needs, please use the Version Wizard.

Stack Design Software


  • 3D Graphics
  • Customizable Load Combinations
  • Adjustable Grade Elevation
  • P-Delta Analysis
  • Guy Wire and Lug Design
  • Lifting Analysis of Stack
  • Toggle Between Imperial & Metric Units
  • Baseplate Design
  • Calculate Frequency for Higher Modes

Stack Design Codes

The user has complete control over the design codes that are used for Along Wind, Across Wind, Stress and Fatigue. In addition, the load combinations and factors can be customized as needed or auto-populated per the design code selected.  There are several comprehensive steel chimney design codes available within the MecaStack design software:

  • American Standard: ASME STS-1
  • Indian Standard
  • British Standard
  • Euro Standard
  • Canadian Standard
  • ISO 13705 (Formerly API-560)
Stack Design Software

Seismic Design Codes:

There are several seismic design codes available:

  • Indian (IS1893)
  • UBC 97
  • Manual Entry
  • International Building Code (IBC 2012)
  • Response Spectrum Analysis
  • National Building Code of Canada (NBCC 2010)
  • EuroNorm (EN 1998-6)

Lifting Stack Design Analysis and Extraction

Another critical item with steel stack design, is the lifting analysis portion of the design. It’s great when the stack design comes together and shows it will work when the stack is erected, but if the stack can’t be lifted into position then it is all for not and it could create a dangerous situation for those around. Sometimes to ease the stress the stack incurs when being lifted, it is wise to lift the stack in multiple sections instead of one large section. Although MecaStack provides the user with the ability to analyze the stack lifting design as a whole, it also allows the user to extract certain sections of their stack lifting design to analyze how it will perform during the lifting process.

This only analyzes the stack itself and not the lifting attachments used to lift the stack. If you are interested in also analyzing the lifting lugs, please look into our MecaLug software.

MecaStack Stack Lifting Design Menu
MecaStack Steel Stack Lifting Design
MecaStack Steel Stack Lifting Design
MecaStack Steel Stack Lifting Design

Guyed Stack Design

MecaStack Guyed Stack Design

Guyed steel stack design can be extremely complicated. The designer must consider the nonlinearity of the cables as well as all combinations of load direction, corrosion and temperature in order to find the worst case for each element of the design. Most general purpose structural programs (StaadPro, Risa, etc.) simply don’t handle guyed stack design adequately, or they make it extremely difficult and time consuming. However, MecaStack not only makes modeling a guyed stack simple, but it automatically constructs an array of load cases in different loading directions to ensure that the worst case scenarios for each element of the design is captured. In addition, it also helps with the selection of the appropriate guy wire hardware and with the design of the guy lug attachment to the stack. 

The design of a single guyed stack usually saves enough time to recover the cost of the software.

MecaStack Guyed Stack Design of Single Lug

Single Guy Lug Detail

MecaStack Guyed Stack Design of Double Lug

Double Guy Lug Detail

MecaStack Guyed Stack Design Connection
MecaStack Guyed Stack Design Deadman Connection

Stack Analysis Output

Output reports are customizable in MecaStack. The user can select from a table of contents which items are going to be presented in the final report and save this configuration in a .TOC file so they don’t have to reselect those items again for future reports. Also, by clicking on any of the table of contents items, it will take the user directly to that section for further investigation. Sections involving “Pass” or “Fail” criteria are displayed with the colors green for passing and red for failing. This allows the user to quickly determine if there are any problems in the steel chimney.

MecaStack Steel Stack Design Output

MecaStack Stack Design Software Version Comparison

FeatureStandard VersionPro Version
Self-Supported Stack
Stack with Lateral Guides
Lifting Analysis
P-Delta Analysis
Guy Wire Supported Stack


Can I get a fully functioning demo to try out the software?
We offer a limited demo, but we do not offer a fully functioning demo.

Does the program have a help manual?
The software has a help manual which is searchable and can be navigated on the computer, but is not suitable for printing.

How quickly can I begin using the software?
Our order process is completely automated. If you purchase online, you will automatically receive an email with instructions on downloading and activating the software. This information also appears on the last page of the order process. You will be using the software in minutes after purchase.

How do I renew the lease on my software to get the Early Pricing?
Thirty (30) days prior the the expiration date on your lease, you should receive an email reminder. In addition, any time you open the software within that 30 day period prior to expiration, you will get a warning in the software that it’s about to expire. To renew pricing and get the best pricing, go to the “Customer Portal” option at the top of this page. Log into our customer portal, and then go to “Renewals and Upgrades”. Here you should see the [Early] renewal option. Place the order online, and the expiration date will automatically be extended by one (1) year.

What is new in MecaStack?
We have created several videos to help show the improvements in MecaStack, as well as how to solve certain common problems. Visit